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zhong zai qiao liang qu duan xin hao dian lan fang hu qian yin dian liu ying xiang de gai zao cuo shi
Author(s): 
Pages: 8-11
Year: Issue:  2
Journal: Railway Signalling & Communication Engineering

Keyword:  信号电缆重载铁路牵引电流桥梁改造措施;
Abstract: 由于重载铁路牵引电流增大,对轨旁信号电缆的干扰也趋于严重,尤其在桥梁区段,甚至出现电缆烧损的情况.在此背景下,首先对大秦线AT供电和贯通地线条件下的接地方案和特点进行概述,系统总结重载条件下信号电缆对牵引电流干扰进行防护的改造措施,包括消除可能引起电孤放电的电位差、对信号电缆和贯通地线进行物理隔离、必要条件下加设地网、对贯通地线进行断线检测、有效防止接触网闪络等现象、信号电缆双端接地宜改为单端接地等.
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